Causes of decreased hearing following surgery

Conductive

1)      Patient was a cholesteatoma hearer

2)      Ossicular discontinuity during surgery

3)      Inadequate graft placement

SNHL

1)      Noise induced hearing loss (burr)

2)      Irrigation induced hearing loss (noise / trauma over RW/OW)

3)      Suction over RW/OW

4)      Ototoxic medications (spirit/ betadine thru RW/OW)

5)      Labyrinthine/cochlear (promontory) trauma

6)      Post op labrynthitis

7)      Ototoxic antibiotic following surgery